Silva Júnior, Hilton Mariano da, and Larissa Volpini Cardoso. “RISADA PEGA: A Mnemonic Method in Portuguese for Alarm Criteria in Emergency Headaches”. Headache Medicine 12, no. Supplement (November 17, 2021): 29. Accessed January 9, 2026. https://www.headachemedicine.com.br/index.php/hm/article/view/534.